将抖动图标添加到视频

Question

有人可以帮助我将图标合并到应该在视频播放时摆动的视频。我已将动画添加到摆动图标，但只有静态图标才会合并到视频中。如果有人能帮助我，我会很感激。

我给你我的使用

//- (void)exportDidFinish:(AVAssetExportSession*)session{ 


    NSLog(@"baseView subviews : %@", [baseView subviews]); 

    UIGraphicsBeginImageContext(baseView.bounds.size); 
    [baseView.layer renderInContext:UIGraphicsGetCurrentContext()]; 
    //[self wobbleVideo:baseView]; 

    UIImage *resultImage = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext(); 

    aLayer = [CALayer layer]; 
    aLayer.frame = CGRectMake(0, 0, 320, 380); 
    aLayer.bounds = CGRectMake(0, 0, 320, 380); 
    aLayer.contents = (id) resultImage.CGImage; 
    aLayer.opacity = 1; 
    aLayer.backgroundColor = [UIColor clearColor].CGColor; 
    aLayer.geometryFlipped = YES; 
    [aLayer addAnimation:[self getShakeAnimation] forKey:@"transform"]; 


    AVURLAsset *asset = [AVURLAsset URLAssetWithURL:rotatedVideoUrl options:nil]; 
    cmp = [AVMutableComposition composition]; 

    AVMutableCompositionTrack *videoComposition = [cmp addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid]; 
    AVMutableCompositionTrack *audioComposition = [cmp addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid]; 
    AVAssetTrack *sourceVideoTrack = [[asset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0]; 
    AVAssetTrack *sourceAudioTrack = [[asset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0]; 
    [videoComposition insertTimeRange:CMTimeRangeMake(kCMTimeZero, [asset duration]) ofTrack:sourceVideoTrack atTime:kCMTimeZero error:nil] ; 
    [audioComposition insertTimeRange:CMTimeRangeMake(kCMTimeZero, [asset duration]) ofTrack:sourceAudioTrack atTime:kCMTimeZero error:nil] ; 


    animComp = [AVMutableVideoComposition videoComposition]; 
    animComp.renderSize = CGSizeMake(320, 360); 
    animComp.frameDuration = CMTimeMake(1,30); 
    CALayer *parentLayer = [CALayer layer]; 
    CALayer *videoLayer = [CALayer layer]; 
    parentLayer.frame = CGRectMake(0, 0, 320, 360); 
    videoLayer.frame = CGRectMake(0, 0, 320, 360); 
    [parentLayer addSublayer:videoLayer]; 
    [parentLayer addSublayer:aLayer]; 
    animComp.animationTool = [AVVideoCompositionCoreAnimationTool videoCompositionCoreAnimationToolWithPostProcessingAsVideoLayer:videoLayer inLayer:parentLayer]; 


    // to gather the audio part of the video 
    NSArray *tracksToDuck = [cmp tracksWithMediaType:AVMediaTypeAudio]; 
    NSMutableArray *trackMixArray = [NSMutableArray array]; 
    for (NSInteger i = 0; i < [tracksToDuck count]; i++) { 
     AVMutableAudioMixInputParameters *trackMix = [AVMutableAudioMixInputParameters audioMixInputParametersWithTrack:[tracksToDuck objectAtIndex:i]]; 
     [trackMix setVolume:10 atTime:kCMTimeZero]; 
     [trackMixArray addObject:trackMix]; 
    } 
    audioMix = [AVMutableAudioMix audioMix]; 
    audioMix.inputParameters = trackMixArray; 

    AVMutableVideoCompositionInstruction *instruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction]; 
    instruction.timeRange = CMTimeRangeMake(kCMTimeZero, [asset duration]); 
    AVMutableVideoCompositionLayerInstruction *layerVideoInstruction = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:videoComposition]; 
    [layerVideoInstruction setOpacity:1.0 atTime:kCMTimeZero]; 
    instruction.layerInstructions = [NSArray arrayWithObject:layerVideoInstruction] ; 
    animComp.instructions = [NSArray arrayWithObject:instruction]; 
    [self exportMovie:self]; 


} 



//WOBBLE ANIMATION------------------------------------- 
- (CAKeyframeAnimation*)getShakeAnimation { 

    CAKeyframeAnimation* animation = [CAKeyframeAnimation animationWithKeyPath:@"transform"]; 

    CGFloat wobbleAngle = 0.06f; 

    NSValue* valLeft = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(wobbleAngle, 0.0f, 0.0f, 1.0f)]; 
    NSValue* valRight = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(-wobbleAngle, 0.0f, 0.0f, 1.0f)]; 
    animation.values = [NSArray arrayWithObjects:valLeft, valRight, nil]; 

    animation.autoreverses = YES; 
    animation.duration = 0.125; 
    animation.repeatCount = HUGE_VALF; 

    return animation; 
} 

Answer 1

使用CABasicAnimation达到你想要什么的代码。我在这里贴了一个样本。请看看并告诉我你是否仍然面临这个问题。

CALayer * parentLayer = [CALayer layer]; CALayer * videoLayer = [CALayer图层];

parentLayer.sublayerTransform = CATransform3DMakeRotation(0.0f, 1.0f, -1.0f, 1.0f); 

parentLayer.frame = CGRectMake(0, 0, 320, (window.bounds.size.height - 50)); 
videoLayer.frame = CGRectMake(0, 0, 320, (window.bounds.size.height - 50)); 

parentLayer.geometryFlipped = NO; 
[parentLayer addSublayer:videoLayer]; 


//---- adding wobble image to the video ----// 
for (UIImageView * individualImageViews in [baseView subviews]) 
{ 
    aLayer = [CALayer layer]; 

    float newY = ((window.bounds.size.height - 50) - (individualImageViews.frame.origin.y + individualImageViews.frame.size.height)); // frame is taken like this because the layer was getting flipped 

    aLayer.frame = individualImageViews.frame; 
    aLayer.bounds = individualImageViews.frame; 
    aLayer.frame = CGRectMake(individualImageViews.frame.origin.x, newY , individualImageViews.frame.size.width, individualImageViews.frame.size.height) ; 
    aLayer.bounds = CGRectMake(individualImageViews.frame.origin.x, newY , individualImageViews.frame.size.width, individualImageViews.frame.size.height); 



    aLayer.contents = (id) individualImageViews.image.CGImage; 
    aLayer.opacity = 1; 
    aLayer.backgroundColor = [UIColor clearColor].CGColor; 
    aLayer.geometryFlipped = NO; 

    CABasicAnimation *trans = [CABasicAnimation animationWithKeyPath:@"transform"]; 

    CGFloat wobbleAngle = 0.3f; 

    NSValue* valLeft; 
    NSValue* valRight; 


    valLeft = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(wobbleAngle, 0.0f, 0.0f, 1.0f)]; 
    valRight = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(-wobbleAngle, 0.0f, 0.0f, 1.0f)]; 

    trans.fillMode = kCAFillModeForwards; 
    trans.duration = 1; 
    trans.fromValue = valLeft; 
    trans.toValue = valRight; 
    trans.cumulative = NO; 
    trans.repeatDuration = 10; 
    trans.autoreverses = YES; 

    //trans.autoreverses = YES; 
    //trans.repeatCount = HUGE_VALF; 
    //trans.fromValue = [NSNumber numberWithFloat:1.0]; 
    //trans.toValue = [NSNumber numberWithFloat:0.0];; 

    // need this for export 
    trans.beginTime = 1e-100; 
    trans.removedOnCompletion = NO; 

    [aLayer addAnimation:trans forKey:@"transform"]; 

    [parentLayer addSublayer:aLayer]; 
} 

所有最好的亲爱的。